2016 MLB Relative Power Index (RPI),as of the games of May 22,2016

MLB RPI Rankings
RK	TEAM	RPI	W	L	PCT	SOS	PWR	RS	RA	EXPW-L	EXPWP
1	Chicago Cubs	.543	29	13	.690	.494	0	232	122	33-9	.783
2	Washington Nationals	.532	27	17	.614	.505	0	191	135	29-15	.667
3	Baltimore Orioles	.529	26	16	.619	.499	0	191	167	24-18	.567
4	Texas Rangers	.522	25	19	.568	.507	0	199	191	23-21	.521
5	Boston Red Sox	.521	27	17	.614	.489	0	256	190	28-16	.645
6	Miami Marlins	.518	22	21	.512	.521	0	168	179	20-23	.468
7	San Francisco Giants	.518	27	19	.587	.495	0	198	192	24-22	.515
8	Chicago White Sox	.517	26	18	.591	.492	0	183	150	26-18	.598
9	Seattle Mariners	.517	26	17	.605	.487	0	201	153	27-16	.633
10	Tampa Bay Rays	.511	20	21	.488	.518	0	174	161	22-19	.539
11	New York Mets	.510	25	18	.581	.486	0	167	141	25-18	.584
12	New York Yankees	.506	21	22	.488	.512	0	168	187	19-24	.447
13	Colorado Rockies	.506	21	21	.500	.507	0	208	211	21-21	.493
14	Philadelphia Phillies	.505	25	19	.568	.484	0	142	173	18-26	.403
15	Toronto Blue Jays	.502	22	24	.478	.510	0	186	184	23-23	.505
16	Los Angeles Angels	.499	20	24	.455	.514	0	180	195	20-24	.460
17	Kansas City Royals	.498	22	21	.512	.493	0	152	165	20-23	.459
18	St. Louis Cardinals	.497	23	21	.523	.488	0	243	193	27-17	.613
19	Cleveland Indians	.496	22	19	.537	.483	0	193	167	23-18	.572
20	Pittsburgh Pirates	.496	23	19	.548	.479	0	203	198	22-20	.512
21	Arizona Diamondbacks	.496	21	25	.457	.509	0	214	218	23-23	.491
22	Oakland Athletics	.491	19	26	.422	.514	0	173	225	17-28	.372
23	Los Angeles Dodgers	.490	22	23	.489	.490	0	194	179	24-21	.540
24	San Diego Padres	.487	19	26	.422	.509	0	162	193	19-26	.413
25	Detroit Tigers	.486	21	22	.488	.485	0	198	203	21-22	.488
26	Cincinnati Reds	.483	15	29	.341	.530	0	176	263	14-30	.309
27	Houston Astros	.472	17	28	.378	.503	0	182	215	19-26	.417
28	Milwaukee Brewers	.468	18	26	.409	.487	0	184	223	18-26	.405
29	Atlanta Braves	.462	12	31	.279	.523	0	137	208	13-30	.303
30	Minnesota Twins	.431	11	32	.256	.490	0	152	226	13-30	.311

Glossary

• W: Wins
• L: Losses
• PCT: Winning percentage
• RPI: Relative Power Index+
• SOS: Strength of schedule

• PWR: ESPN Power Ranking
• RS: Runs scored
• RA: Runs allowed
• EXW-L: Expected W-L*
• EXWP: Expected winning percentage*

+The basic formula is 25% team winning percentage, 50% opponents' average winning percentage, and 25% opponents' opponents' average winning percentage.
*ExW-L and ExWP are derived from Bill James' Pythagorean theorem of baseball: Runs scored [squared] / (Runs scored [squared] + runs allowed [squared]). This formula was designed to relate a team's runs scored and runs allowed to its won-lost record.